M172 EEPROM Variables

[POPE3909]

Hi Guys,

I've got M172 on the site which would randomly lose its default EEPROM variables values with some random numbers taking place instead. 

For example, in the EEPROM variables, I have set the default Temperature setpoint of '35' with minimum of 10 and maximum of 50, which is adjustable from the HMI. However, a random number of '1728' is found when I do live debugging.

What would be the likely cause this behaviour? Will a low RTC battery cause similar issue?

[FedericoM · Accepted solution]

This behaviour is for sure not related to RTC.

You might have a wrong pointer in the application.

EEprom is update only from serial access or by using functions sysWritePar*().

If in case of reboot the value is restored to the expected one, it should be a wrong pointer.